Estes ES1504 1/2 A3-4T Rocket Motors Pack of 4

Estes 1/2 A3-4T Rocket Motors (Pk4) ES1504
Safe design, precise manufacturing and strict engineering tolerances have made Estes model rocket engines the standard in the industry. Estes engines are safe and reliable,proven in over 50,000,000 launches!
Estes Solid Fuel Rocket Engine 1/2A3-4T, pack of 4